Finding the Fourth Proportional to 161,809.98, 242,715 and 56,659.02

Step by Step Solution

1. Step 1: Write the proportion equation
   161,809.98 : 242,715 = 56,659.02 : x
2. Step 2: Convert to fraction form
   161,809.98/242,715 = 56,659.02/x
3. Step 3: Cross multiply
   161,809.98x = 242,715 × 56,659.02
4. Step 4: Simplify right side
   161,809.98x = 13,751,994,039.30
5. Step 5: Solve for x
   x = 13,751,994,039.30/161,809.98
6. Step 6: Final answer
   x = 84,988.54